Altdorf (UR): observed built density
Municipality in the canton of Uri · FSO no. 1201 · Parcel data as of July 2025
- Parcels
- 2’277
12 % of the canton
- Municipal zones
- 26
- Median utilization
- 71 %
Canton: 58 %
Switzerland: 10 %
- Median GFZ
- 0.54
Canton: 0.19
Switzerland: 0.09
- Median height
- 9.9 m
Canton: 9.4 m
Switzerland: 9.5 m
- Median floors
- 2.6
Canton: 2.4
Switzerland: 2.3
About Altdorf (UR)
Altdorf (UR) is a municipality in the canton of Uri. The parcel data lists 2’277 parcels in 26 municipal zone types. The zone types with the most parcels are Wohnzone 2 (577), Wohnzone 3 (561) and Landwirtschaftszone (193).
The median parcel is built to a volume utilization of 71 %; half of the parcels lie between 18 % and 107 %. The canton median is 58 %, so Altdorf (UR) sits above it.
The median building height is 9.9 m at 2.6 floors, and the median floor-area ratio (GFZ) is 0.54. Parcels built in the last 20 years reach a mean volume utilization of 115 % (388 parcels), close to the 115 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Wohnzone 2 | 577 | 77 % |
| Wohnzone 3 | 561 | 89 % |
| Landwirtschaftszone | 193 | 14 % |
| Verkehrsfläche innerhalb Bauzonen | 122 | 0 % |
| Wohn- und Gewerbezone 3 | 122 | 92 % |
| Wohnzone Eggberge | 110 | 73 % |
| Kernzone 1 | 99 | 93 % |
| Kernzone 3 | 79 | 57 % |
| Wald | 42 | 0 % |
| Freihaltezone | 40 | 34 % |
| Wohnzone im Landschaftsgebiet | 39 | 51 % |
| Industriezone 2 | 37 | 0 % |
| Other zones (14) | 256 | - |
Volume utilization (ratioV)
Of the 2’247 parcels with a value, half lie between 18 % and 107 %. The median is 71 % and the mean 103 %.
Share of parcels by range
- below 50 %36 %
- 50 % to below 100 %35 %
- 100 % to below 150 %20 %
- 150 % and above9 %
Floor-area ratio (GFZ)
Of the 2’247 parcels with a value, half lie between 0.09 and 0.86. The median is 0.54 and the mean 0.64.
Share of parcels by range
- below 0.5046 %
- 0.50 to below 1.0036 %
- 1.00 to below 1.5010 %
- 1.50 and above7 %
Building height
Of the 1’677 parcels with a value, half lie between 8.2 m and 12.0 m. The median is 9.9 m and the mean 10.3 m.
Share of parcels by range
- below 8 m22 %
- 8 m to below 12 m53 %
- 12 m to below 20 m25 %
- 20 m and above< 1 %
Number of floors
Of the 1’353 parcels with a value, half lie between 2.0 and 3.4. The median is 2.6 and the mean 2.8.
Share of parcels by range
- below 24 %
- 2 to below 341 %
- 3 to below 550 %
- 5 and above5 %
Building age cohorts
Mean volume utilization of the parcels built inside each window, from all years on record down to the last five. The windows overlap: the last 20 years include the last 5.
| Built in | Parcels | Mean utilization |
|---|---|---|
| All years | 2’277 | 115 % |
| Last 60 years | 1’170 | 103 % |
| Last 40 years | 839 | 108 % |
| Last 20 years | 388 | 115 % |
| Last 15 years | 273 | 119 % |
| Last 10 years | 182 | 128 % |
| Last 5 years | 73 | 94 % |
How to read this page
room shows observed built density: what has been built on the parcels, not what the zoning permits. Volume utilization (ratioV) compares the built volume of a parcel with the reference volume of its municipal zone type. The floor-area ratio (GFZ) is floor area divided by parcel area; building height and number of floors are taken from the buildings on a parcel. Figures pool all municipal zones of the area. Medians and quartiles are read from bins 10 points (ratioV), 0.1 (GFZ), 2 m (height) and 1 floor wide, so they are exact to within one bin; means are exact. A parcel counts in a distribution only when the parcel data has a value for it. The floors distribution leaves out parcels without a building (0 floors).